Grain-separator



UNITED sTATEs PATENTOFFICE.

GRAIN-SEPARATOB.

Specification `of Letters r Patent To all 'whom it may concern: a

Be it known that I, JOHN R. MoFrITT, of Piqua, Miami county, Ohio, have invented a certain new and useful Improvement in 5 Grain-Separators; and I- hereby declare the r following to be a `full and exact description of the same, reference being had to the ac- -companying drawings, making part of thi specification.

The said improvement consists in a peculiar arrangement and adaptation of screen, and reversible delivery spout to `separate extraneous matters from the grain after the action of the winnowing apparatus.

The accompanying drawings illustrate the invention applied to an overshot threshing machine, or one in which the concave is placed above the cylinder.

Figure 1 is a perspective view of the machine. Fig. 2 is a detached perspective view of the screen and reversible spout on a larger scale. Fig. 3 is a vertical transverse section of the shoe screen and spout at m Fig. l.

The frame A cylinder B straw carrier F elevator O and winnowing apparatus H l may be of any suitable construction.

M is the spout through which clean grai is delivered from the machine.

N is a screen which is fixed in position above or within the spout M, so as to move in conjunction therewith. The screen and spout are suspended beneath the shoe in the following manner: P P are screw bolts which may either be attached directly to the side of the shoe or pass through hangers attached thereto-the former plan being preferred as more simple. At one end the frame of the spout, and that of the screen are made sufficiently thin, and are pierced to receive the bolt P which passes through both, and supports them by means of a screw nut p. Q is a yoke which is attached to the spout M in the manner shown, in 'the proper position to'bring it immediately beneath one side of the shoe when the `spout is in position. The screen is placed above the spout and within the yoke in the manner exhibited so that the screw boltP being attached to the yoke by means of the nut p supports both spout and screen. In practice the bolts P and `P are permanently fixed to the sides of the shoe, and are made of equal length being the length necessary to No. 26,283, y dated November 29,1859.

pass through `the rearlends of f both spout and screen as seen at P. y The reversalof the spout is effectedby removingfthehutsh` .z

r r', turning the `spout and eereen endurer o end and replacing them in position so 'that` X the bolt which formerlyysustainedthe "rear end of the spout now sustains the yoke and vice versa.

In the construction shownqfinl the drawings it would be needful to reverse..

the bolts P and P also; but these variations` n M are immaterial `to the principle of theaineV vention. l w 1 In the customarywinnowingIapparatusjas I` adapted to threshing machines the actionof f the shoe screen working inconjunction with a blast fails to separate lthoseparts oftlie" refuse which are of nearly equal weight with the grain because a strengthl of blastwhich would blow themawayiwould remove grain as well. For thisreason" grain thus inter-l.

mixed is often conveyedfromithe thresher and Winnower toA aseparate milll where it can be subjected to the `screening `action for 1 a longer period and apart from the wind. lfll i By my improvement the screening appara- `1 I@ with the shoe in such a manner as to subject tus 1s arranged and operatedin connection the grain to its final screening apart from the fan blast, immediately prior to itsdis-` Y charge from the machineand the apparatus i 185 1 either side which direction of the windor` i circumstances of the location `may render j) g is so arranged as to adapt it to deliveraon desirable.

I do not Wish to be understood `as claim-` i ing broadly under this application every"` apparatus operating 1n `connection with "a' threshing machine `to screen grain apart from the action of the fan blast, thisbein accomplished by the apparati@ `descrlle in Division C of mypatentforgrain separator dated 30 November `1852, and reissued c l Neitherfdo `I claimbroadly f l t to be the inventor of a combination of screen.. a

17th Mey 1859.

and spout adapted to `separate articles of 1 different neness and `deposit them `automatically in separate receptacles. My claim is t confined to a specific arrangement, whereby l the screen and spout are adapted to operate in connection withfajgrain lseparatingxma` l" j I do not claim such devices otherwise than@ chine in the manner hereindescribed, and

inthe said connection.

The `following is what I claimlas new and of Iny invention herein and desire to secure screening grain after the action of the Winby Letters Patent. novving apparatus. Y Y l0 In the described combination with a re- In testimony of Which invention, I hereversible spout adapted to discharge grainy unto set my hand. Y 5 at either side of a threshing and separating J. R. MOFFITT.

machine, I claim the screen N, placed With'- VVitnesses: in or above the said spout and operated byy OTis KNIGHT, the motion of the Shoe for the purpose of CHAS. WALTER. 

